Lexus RC350 (2022 year). Manual in english — page 18
298
7-2. Steps to take in an emergency
The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that his or
her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time, after the seat belt is fastened and unfastened and the
vehicle reaches a certain speed.
■
Master warning light (warning buzzer)
■
Tire pressure warning light
■
Parking brake indicator (warning buzzer)
Warning light
Details/Actions
A buzzer sounds and the warning light comes on and flashes to indicate
that the master warning system has detected a malfunction.
Warning light
Details/Actions
When the light comes on:
Low tire inflation pressure such as
Natural causes (
Flat tire (
Adjust the tire inflation pressure to the specified level. The light will
turn off after a few minutes. In case the light does not turn off even if
the tire inflation pressure is adjusted, have the system checked by
your Lexus dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system
Have the system checked by your Lexus dealer.
Warning light
Details/Actions
(flashes)
(U.S.A.)
or
(flashes)
(Canada)
It is possible that the parking brake is not fully engaged or released
Operate the parking brake switch once again.
This light comes on when the parking brake is not released. If the light
turns off after the parking brake is fully released, the system is operating
normally.
299
7-2. Steps to take in an emergency
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■
Brake hold operated indicator (warning buzzer)
■
SRS warning light
This warning light system monitors the air-
bag sensor assembly, front impact sensors,
side impact sensors (door), side impact
sensors (front), side impact sensors (rear),
driver’s seat position sensor, driver’s seat
belt buckle switch, front passenger occu-
pant classification system, “AIR BAG ON”
indicator light, “AIR BAG OFF” indicator
light, front passenger’s seat belt buckle
switch, seat belt pretensioners, airbags,
interconnecting wiring and power sources.
(
■
Front passenger detection sensor, seat
belt reminder and warning buzzer
●
If luggage is placed on the front passen-
ger seat, the front passenger detection
sensor may cause the warning light to
flash and the warning buzzer to sound
even if a passenger is not sitting in the
seat.
●
If a cushion is placed on the seat, the sen-
sor may not detect a passenger, and the
warning light may not operate properly.
■
If the malfunction indicator lamp comes
on while driving
First check the following:
●
Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●
Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving
trips.
If the light does not go off even after several
trips, contact your Lexus dealer as soon as
possible.
■
Electric power steering system warning
light (warning buzzer)
When the battery charge becomes insuffi-
cient or the voltage temporarily drops, the
electric power steering system warning
light may come on and the warning buzzer
may sound.
■
When the tire pressure warning light
comes on
Check the tire inflation pressure and adjust
to the appropriate level. Pushing the tire
pressure warning reset switch will not turn
off the tire pressure warning light.
■
The tire pressure warning light may
come on due to natural causes
The tire pressure warning light may come
on due to natural causes such as natural air
leaks and tire inflation pressure changes
caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the
warning light (after a few minutes).
■
When a tire is replaced with the spare
tire
The spare tire is not equipped with a tire
pressure warning valve and transmitter. If a
tire goes flat, the tire pressure warning light
will not turn off even though the flat tire has
been replaced with the spare tire.
■
Conditions that the tire pressure warn-
ing system may not function properly
■
If the tire pressure warning light fre-
quently comes on after blinking for 1
minute
If the tire pressure warning light frequently
comes on after blinking for 1 minute when
the engine switch is turned to IGNITION
ON mode, have it checked by your Lexus
dealer.
■
Warning buzzer
In some cases, the buzzer may not be heard
due to being in a noisy location or audio
sound.
Warning light
Details/Actions
(flashes)
Indicates a malfunction in the brake hold system
Have the vehicle inspected by your Lexus dealer immediately.
300
7-2. Steps to take in an emergency
WARNING
■
If both the ABS and the brake system
warning lights remain on
Stop your vehicle in a safe place immedi-
ately and contact your Lexus dealer. The
vehicle will become extremely unstable
during braking, and the ABS system may
fail, which could cause an accident
resulting in death or serious injury.
■
When the electric power steering
system warning light comes on
The steering wheel may become
extremely heavy.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using more
force than usual.
■
If the tire pressure warning light
comes on
Be sure to observe the following precau-
tions. Failure to do so could cause a loss
of vehicle control and result in death or
serious injury.
●
Stop your vehicle in a safe place as
soon as possible. Adjust the tire infla-
tion pressure immediately.
●
If the tire pressure warning light comes
on even after tire inflation pressure
adjustment, it is probable that you have
a flat tire. Check the tires. If a tire is flat,
change it with the spare tire and have
the flat tire repaired by the nearest
Lexus dealer.
●
Avoid abrupt maneuvering and brak-
ing. If the vehicle tires deteriorate, you
could lose control of the steering
wheel or the brakes.
■
If a blowout or sudden air leakage
should occur
The tire pressure warning system may
not activate immediately.
■
Maintenance of the tires
Each tire, including the spare (if pro-
vided), should be checked monthly when
cold and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire infla-
tion pressure label (tire and load
information label). (If your vehicle has
tires of a different size than the size indi-
cated on the vehicle placard or tire infla-
tion pressure label [tire and load
information label], you should determine
the proper tire inflation pressure for
those tires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS-tire pressure
warning system) that illuminates a low
tire pressure telltale (tire pressure warn-
ing light) when one or more of your tires
is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale
(tire pressure warning light) illuminates,
you should stop and check your tires as
soon as possible, and inflate them to the
proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire
to overheat and can lead to tire failure.
Under-inflation also reduces fuel effi-
ciency and tire tread life, and may affect
the vehicle’s handling and stopping abil-
ity.
Please note that the TPMS (tire pressure
warning system) is not a substitute for
proper tire maintenance, and it is the
driver’s responsibility to maintain correct
tire pressure, even if under-inflation has
not reached the level to trigger illumina-
tion of the TPMS low tire pressure telltale
(tire pressure warning light).
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7-2. Steps to take in an emergency
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WARNING
Your vehicle has also been equipped with
a TPMS (tire pressure warning system)
malfunction indicator to indicate when
the system is not operating properly. The
TPMS (tire pressure warning system)
malfunction indicator is combined with
the low tire pressure telltale (tire pres-
sure warning light). When the system
detects a malfunction, the telltale will
flash for approximately one minute and
then remain continuously illuminated.
This sequence will continue upon subse-
quent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may
not be able to detect or signal low tire
pressure as intended.
TPMS (tire pressure warning system)
malfunctions may occur for a variety of
reasons, including the installation of
replacement or alternate tires or wheels
on the vehicle that prevent the TPMS
(tire pressure warning system) from func-
tioning properly. Always check the
TPMS (tire pressure warning system)
malfunction telltale after replacing one
or more tires or wheels on your vehicle to
ensure that the replacement or alternate
tires and wheels allow the TPMS (tire
pressure warning system) to continue to
function properly.
NOTICE
■
To ensure the tire pressure warning
system operates properly
Do not install tires with different specifi-
cations or makers, as the tire pressure
warning system may not operate prop-
erly.
If a warning message is dis-
played
The multi-information display
shows warnings of system malfunc-
tions, incorrectly performed opera-
tions, and messages that indicate a
need for maintenance. When a
message is shown, perform the cor-
rection procedure appropriate to
the message.
Except F SPORT models
Master warning light
The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.
Multi-information display
Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the following actions
have been performed, contact your
Lexus dealer.
A
B
302
7-2. Steps to take in an emergency
F SPORT models (main meter in
center position)
Master warning light
The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.
Multi-information display
Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the following actions
have been performed, contact your
Lexus dealer.
A
B
F SPORT models (main meter
moved to the right)
Master warning light
The master warning light also comes on
or flashes in order to indicate that a mes-
sage is currently being displayed on the
multi-information display.
Multi-information display
Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the following actions
have been performed, contact your
Lexus dealer.
A
B
303
7-2. Steps to take in an emergency
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The warning lights and warning buzzers operate as follows depending on the con-
tent of the message. If a message indicates the need for inspection by a dealer, have
the vehicle inspected by your Lexus dealer immediately.
In some situations, the master warning light and warning buzzer may not oper-
ate as specified. In this case, follow the instructions displayed in the warning
message.
If a warning light comes on or flashes at the same time that a warning message is
displayed, take corrective action according to the warning light. (
*
: A buzzer sounds the first time a message is shown on the multi-information display.
■
Warning messages
The warning messages explained below
may differ from the actual messages
according to operation conditions and vehi-
cle specifications.
■
Warning buzzer
In some cases, the buzzer may not be heard
due to being in a noisy location or audio
sound.
■
If “Engine Oil Level Low Add or
Replace” is displayed
The engine oil level is low. Check the level
of the engine oil, and add if necessary.
This message may appear if the vehicle is
stopped on a slope. Move the vehicle to a
level surface and check to see if the mes-
sage disappears.
■
If a message that indicates the malfunc-
tion of front camera is displayed
The following systems may be suspended
until the problem shown in the message is
resolved. (
●
PCS (Pre-Collision System)
●
LDA (Lane Departure Alert with steering
control)
●
Automatic High Beam
●
Dynamic radar cruise control with
Messages and warnings
Warning buzzer
*
Warning
Comes on
Sounds
Indicates an important situation, such as when a sys-
tem related to driving is malfunctioning or that dan-
ger may result if the correction procedure is not
performed
Flashes
Sounds
Indicates a situation, such as when damage to the
vehicle or danger may result
Comes on
Does not sound
Indicates a condition, such as malfunction of electri-
cal components, their condition, or indicates the
need for maintenance
Flashes
Does not sound
Indicates a situation, such as when an operation has
been performed incorrectly, or indicates how to
perform an operation correctly
304
7-2. Steps to take in an emergency
full-speed range
■
If a message that indicates the malfunc-
tion of radar sensor is displayed
The following systems may be suspended
until the problem shown in the message is
●
PCS (Pre-Collision System)
■
If “Maintenance Required Soon” is dis-
played
Indicates that all maintenance according to
the driven distance on the maintenance
schedule
*
should be performed soon.
Comes on approximately 4500 miles
(7200 km) after the message has been
reset. If necessary, perform maintenance.
Please reset the message after the mainte-
nance is performed. (
*
: Refer to the separate “Scheduled Main-
■
If “Maintenance Required Visit Your
Dealer” is displayed
Indicates that all maintenance is required to
correspond to the driven distance on the
maintenance schedule
*
.
Comes on approximately 5000 miles
(8000 km) after the message has been
reset. (The indicator will not work properly
unless the message has been reset.) Per-
form the necessary maintenance. Please
reset the message after the maintenance is
performed. (
*
: Refer to the separate “Scheduled Main-
■
If “Oil Maintenance Required Soon” is
displayed
Indicates that the engine oil is scheduled to
be changed. (The indicator will not work
properly unless the oil maintenance data
has been reset.)
Check the engine oil, and change if neces-
sary. After changing the engine oil, the oil
change system should be reset. (
■
If “Oil Maintenance Required” is dis-
played
Indicates that the engine oil should be
changed. (After the engine oil is changed
and the oil maintenance data has been
reset.)
Check and change the engine oil, and oil fil-
ter by your Lexus dealer. After changing the
engine oil, the oil change system should be
reset. (
■
If a message that indicates the need for
visiting your Lexus dealer is displayed
The system or part shown on the
multi-information display is malfunctioning.
Have the vehicle inspected by your Lexus
dealer immediately.
■
●
If the following messages are shown, fol-
lowing the instructions, accordingly.
• “Engine Coolant Temp High” (
●
If any of the following messages are
shown on the multi-information display, it
may indicate a malfunction. Have the
vehicle inspected by your Lexus dealer
immediately.
• “Braking Power Low”
• “Access System with Elec. Key Malfunc-
tion”
●
If any of the following messages are
shown on the multi-information display, it
may indicate a malfunction. Immediately
stop the vehicle and contact your Lexus
dealer.
• “Oil Pressure Low”
• “Charging System Malfunction”
NOTICE
■
“High Power Consumption Partial
Limit On AC/Heater Operation” is
frequently shown
There is a possible malfunction relating
to the charging system or the battery
may be deteriorating. Have the vehicle
inspected by your Lexus dealer.
305
7-2. Steps to take in an emergency
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Stop the vehicle in a safe place on a
hard, flat surface.
Set the parking brake.
Shift the shift lever to P.
Stop the engine.
Turn on the emergency flashers.
(
Type A
Jack handle
Wheel nut wrench
Screwdriver
Towing eyelet
If you have a flat tire
Your vehicle is equipped with a
spare tire. The flat tire can be
replaced with the spare tire.
For details about tires:
WARNING
■
If you have a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat
tire can damage the tire and the wheel
beyond repair, which could result in an
accident.
Before jacking up the vehicle
Location of the spare tire, jack and tools
A
B
C
D
306
7-2. Steps to take in an emergency
Spare tire
Jack
Type B
Jack handle
Wheel nut wrench
Screwdriver
Towing eyelet
Spare tire
Jack
E
F
A
B
C
D
E
F
WARNING
■
Using the tire jack
Observe the following precautions.
Improper use of the tire jack may cause
the vehicle to suddenly fall off the jack,
leading to death or serious injury.
●
Do not use the tire jack for any pur-
pose other than replacing tires or
installing and removing tire chains.
●
Only use the tire jack that comes with
this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do
not use other tire jacks for replacing
tires on this vehicle.
●
Put the jack properly in its jack point.
●
Do not put any part of your body under
the vehicle while it is supported by the
jack.
●
Do not start the engine or drive the
vehicle while the vehicle is supported
by the jack.
307
7-2. Steps to take in an emergency
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1
Hold the hook and lift up the lug-
gage mat.
2
Secure the luggage mat using the
hook.
3
Remove the tool tray.
4
Take out the jack.
1
For tightening
2
For loosening
If the jack is too tightly installed to be
removed by hand, insert a tool, such as the
screwdriver included with the vehicle, into
the hole of the jack (portion
) and
loosen the jack.
1
Secure the luggage mat using the
hook. (
WARNING
●
Do not raise the vehicle while some-
one is inside.
●
When raising the vehicle, do not put an
object on or under the jack.
●
Do not raise the vehicle to a height
greater than that required to replace
the tire.
●
Use a jack stand if it is necessary to get
under the vehicle.
●
When lowering the vehicle, make sure
that there is no-one near the vehicle. If
there are people nearby, warn them
vocally before lowering.
Taking out the jack
NOTICE
■
To prevent damage to luggage mat
When closing the trunk lid, do not leave
the luggage mat lever hooked on the
edge of the trunk.
Taking out the spare tire
A
308
7-2. Steps to take in an emergency
2
Remove the tool tray.
3
Loosen the center fastener that
secures the spare tire.
If the center fastener cannot be turned by
hand, use the wheel nut wrench that is
stored in the trunk. (To secure the tire,
tighten the center fastener by hand. Do not
use the wrench or other tools.)
1
Chock the tires.
2
Slightly loosen the wheel nuts (one
turn).
3
Turn the tire jack portion by
hand until the notch of the jack is in
contact with the jack point.
The jack point guides are located under
the rocker panel. They indicate the jack
WARNING
■
When storing the spare tire
Be careful not to catch fingers or other
body parts between the spare tire and
the body of the vehicle.
Replacing a flat tire
Flat tire
Wheel chock posi-
tions
Front left-hand side
Behind the rear
right-hand side tire
Front right-hand
side
Behind the rear
left-hand side tire
Rear left-hand side
In front of the front
right-hand side tire
Rear right-hand side
In front of the front
left-hand side tire
A
309
7-2. Steps to take in an emergency
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point positions.
4
Raise the vehicle until the tire is
slightly raised off the ground.
5
Remove all the wheel nuts and the
tire.
When resting the tire on the ground, place
the tire so that the wheel design faces up to
avoid scratching the wheel surface.
1
Remove any dirt or foreign matter
from the wheel contact surface.
If foreign matter is on the wheel contact
surface, the wheel nuts may loosen while
the vehicle is in motion, causing the tire to
WARNING
■
Replacing a flat tire
●
Do not touch the disc wheels or the
area around the brakes immediately
after the vehicle has been driven.
After the vehicle has been driven the
disc wheels and the area around the
brakes will be extremely hot. Touching
these areas with hands, feet or other
body parts while changing a tire, etc.
may result in burns.
●
Failure to follow these precautions
could cause the wheel nuts to loosen
and the tire to fall off, resulting in death
or serious injury.
• Never use oil or grease on the wheel
bolts or wheel nuts.Oil and grease may
cause the wheel nuts to be excessively
tightened, leading to bolt or disc wheel
damage. In addition, the oil or grease
can cause the wheel nuts to loosen and
the wheel may fall off, causing a serious
accident. Remove any oil or grease
from the wheel bolts or wheel nuts.
• Have the wheel nuts tightened with a
torque wrench to 76 ft•lbf (103 N•m,
10.5 kgf•m) as soon as possible after
changing wheels.
• Do not attach a heavily damaged
wheel ornament, as it may fly off the
wheel while the vehicle is moving.
• When installing a tire, only use wheel
nuts that have been specifically
designed for that wheel.
• If there are any cracks or deformations
in the bolt screws, nut threads or bolt
holes of the wheel, have the vehicle
inspected by your Lexus dealer.
Installing the spare tire
310
7-2. Steps to take in an emergency
come off.
2
Install the spare tire and loosely
tighten each wheel nut by hand by
approximately the same amount.
When replacing an aluminum wheel with a
steel wheel, tighten the wheel nuts until the
tapered portion
comes into loose con-
tact with the disc wheel seat
.
When replacing an aluminum wheel with
an aluminum wheel, turn the wheel nuts
until the washers
come into contact
with the disc wheel
.
3
Lower the vehicle.
4
Firmly tighten each wheel nut two
or three times in the order shown in
the illustration.
Tightening torque:
76 ft•lbf (103 N•m, 10.5 kgf•m)
5
Stow the flat tire, tire jack and all
tools.
■
The spare tire
●
The spare tire is identified by the label
“TEMPORARY USE ONLY” on the tire
sidewall.
●
Use the spare tire temporarily, and only in
an emergency.
●
Make sure to check the tire inflation pres-
sure of the spare tire. (
■
When using the spare tire
As the spare tire is not equipped with a tire
pressure warning valve and transmitter, low
inflation pressure of the spare tire will not be
indicated by the tire pressure warning sys-
tem. Also, if you replace the spare tire after
the tire pressure warning light comes on,
the light remains on.
A
B
A
B
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7-2. Steps to take in an emergency
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■
When the spare tire is equipped
The vehicle becomes lower when driving
with the spare tire compared to when driv-
ing with standard tires.
■
If you have a flat rear tire on a road cov-
ered with snow or ice (vehicles with
front and rear tires of the same size
except for vehicles with LDH and
19-inch tires)
Install the spare tire on one of the front
wheels of the vehicle. Perform the following
steps and fit tire chains to the rear tires:
1
Replace a front tire with the spare tire.
2
Replace the flat rear tire with the tire
removed from the front of the vehicle.
3
Fit tire chains to the rear tires.
WARNING
■
When using the spare tire
●
Remember that the spare tire provided
is specifically designed for use with
your vehicle. Do not use your spare
tire on another vehicle.
●
Do not use more than one spare tire
simultaneously.
●
Replace the spare tire with a standard
tire as soon as possible.
●
Avoid sudden acceleration, abrupt
steering, sudden braking and shifting
operations that cause sudden engine
braking.
■
When the spare tire is attached
The vehicle speed may not be correctly
detected, and the following systems may
not operate correctly:
• ABS & Brake assist
• VSC
• TRAC
• Dynamic radar cruise control with
full-speed range
• PCS
• EPS
• Adaptive Variable Suspension System
(if equipped)
• LDA (Lane Departure Alert with
steering control)
• VGRS (if equipped)
• LDH (Lexus Dynamic Handling sys-
tem) (if equipped)
• DRS (Dynamic Rear Steering) (if
equipped)
• VDIM (Vehicle Dynamics Integrated
Management)
• Tire pressure warning system
• Lexus parking assist monitor
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)
Also, not only can the following system
not be utilized fully, but it may even nega-
tively affect the drive-train components:
• AWD system (if equipped)
■
Speed limit when using the spare tire
Do not drive at speeds in excess of 50
mph (80 km/h) when a spare tire is
installed on the vehicle.
The spare tire is not designed for driving
at high speeds. Failure to observe this
precaution may lead to an accident caus-
ing death or serious injury.
■
After using the tools and jack
Before driving, make sure all the tools
and jack are securely in place in their
storage location to reduce the possibility
of personal injury during a collision or
sudden braking.
312
7-2. Steps to take in an emergency
One of the following may be the cause
of the problem:
There may not be sufficient fuel in
the vehicle’s tank.
Refuel the vehicle.
The engine may be flooded.
Try to restart the engine again fol-
lowing correct starting procedures.
(
There may be a malfunction in the
engine immobilizer system.
(
One of the following may be the cause
of the problem:
The battery may be discharged.
(
The battery terminal connections
may be loose or corroded.
(
NOTICE
■
Driving with tire chains and the spare
tire
Do not fit tire chains to the spare tire.
Tire chains may damage the vehicle body
and adversely affect driving perfor-
mance.
■
When replacing the tires
When removing or fitting the wheels,
tires or the tire pressure warning valve
and transmitter, contact your Lexus
dealer as the tire pressure warning valve
and transmitter may be damaged if not
handled correctly.
If the engine will not start
If the engine will not start even
though correct starting procedures
are being followed (
P.125), con-
sider each of the following points:
The engine will not start even
though the starter motor oper-
ates normally.
The starter motor turns over
slowly, the interior lights and
headlights are dim, or the horn
does not sound or sounds at a low
volume.
313
7-2. Steps to take in an emergency
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The engine starting system may be
malfunctioning due to an electrical
problem such as electronic key battery
depletion or a blown fuse. However, an
interim measure is available to start the
engine. (
One of the following may be the cause
of the problem:
One or both of the battery terminals
may be disconnected. (
The battery may be discharged.
(
There may be a malfunction in the
steering lock system.
Contact your Lexus dealer if the problem
cannot be repaired, or if repair procedures
are unknown.
When the engine does not start, the
following steps can be used as an
interim measure to start the engine if
the engine switch is functioning nor-
mally:
1
Set the parking brake.
2
Shift the shift lever to P.
3
Turn the engine switch to ACCES-
SORY mode.
4
Press and hold the engine switch
for about 15 seconds while
depressing the brake pedal firmly.
Even if the engine can be started using
the above steps, the system may be
malfunctioning. Have the vehicle
inspected by your Lexus dealer.
The starter motor does not turn
over
The starter motor does not turn
over, the interior lights and head-
lights do not turn on, or the horn
does not sound.
Emergency start function
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